When the Chassis Management and Monitoring option is set to Enabled, iDRAC generates and logs chassis events. The events generated are integrated into the iDRAC event subsystem and alerts are generated similar to the rest of the events.
CMC also forwards the events generated to iDRAC. In case the iDRAC on the server is not functional, CMC queues the first 16 events and logs the rest in the CMC log. These 16 events are sent to iDRAC as soon as Chassis monitoring is set to enabled.
In instances where iDRAC detects that a required CMC functionality is absent, a warning message is displayed informing you that certain features may not be functional without a CMC firmware upgrade.